TROUBLESHOOTING

Problem

Possible Cause

Probable Correction

 

 

 

No ice falling in bin, but

Ice may be stuck in the

Check water supply – filter may be restricted

ice maker operates

evaporator and the unit is

 

 

"frozen up"

 

 

 

 

 

 

Check inlet water valve – screen may be

 

 

restricted, or valve does not operate

 

 

 

 

 

Hot gas valve may not operate -check and

 

 

repair/replace

 

 

 

 

 

Harvest time set too short – timer needs

 

 

adjustment

 

 

 

 

Too much heat load

Inlet water valve leaks through, needs to be

 

 

replaced

 

 

 

 

No water spray

Water pump does not work, replace it

 

 

 

 

 

Water leak from reservoir, locate and repair

 

 

 

 

Cube size control will not close

See "Too much heat load" or "not enough

 

 

refrigerant"

 

 

 

 

 

Control defective - must be replaced

 

 

 

 

No airflow

Fan motor not turning, needs to be replaced

 

 

 

 

 

Fan blade broken, needs to be replaced

 

 

 

 

 

Condenser completely blocked up, needs cleaning

 

 

 

 

Not enough refrigerant

Add low side access valve, locate leak, recover

 

 

refrigerant, repair, replace dryer, evacuate and

 

 

weigh in the nameplate charge

 

 

 

 

Restricted system

Add low side access valve, recover refrigerant,

 

 

replace dryer, evacuate and weigh in the

 

 

nameplate charge

 

 

 

 

Hot gas valve leaks through

Add low side access valve, recover refrigerant,

 

 

replace hot gas valve and dryer, evacuate and

 

 

weigh in the nameplate charge

 

 

 

Compressor will not operate or pumps poorly.

Start relay or capacitor needs to be replaced

Add low side access valve, recover refrigerant, replace compressor and dryer, evacuate and weigh in the nameplate charge.

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Image 21
Sub-Zero 315 manual Condenser completely blocked up, needs cleaning